3/12/2020 1:44 PM | |
Posts: 3 Rating: (0) |
Software: I have used MB_COMM_LOAD to access the Communication board CB1241, and used MB_SLAVE to configure the slave address and set teh holding register. Hardware connection: I am using a RS485 to USB converter to communicate between PLC and PC. In the PC end, i am running ModScan64 software to read the data. I have only used the TA and TB port of Cb 1241 for communication. Problem: In ModScan64 software it is showing Received invalid Response to MODBUS Query. I can't understand where is the problem. I am reading Holding registers from 40001 to 40100 but I am not getting any value. Can someone please guide me? Thanks a lot N.B. attachments: 1. TiaV15.1 project
AttachmentModbus_RTU_Tia_v15_1.zip (73 Downloads) |
Last edited by: Arnab_RC at: 03/12/2020 13:47:23Last edited by: Arnab_RC at: 03/12/2020 13:49:37Last edited by: Arnab_RC at: 03/12/2020 13:52:32 |
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